Device for blowing bubbles



June 28, 1955 c. 'w. WISTER DEVICE FOR BLOWING BUBBLES 2 Sheets-Sheet 1 Filed Jan. 4, 1954 FIG.

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INVENTOR. CYNTHl A WWrsraR BYW ATTORNEY June 28, 1955 c. w. WISTER DEVICE FOR BLOWING BUBBLES 2 Sheets-Sheet 2 Filed Jan. 4, 1954 Fl G. 3.

/PLASTIC F: G. 4. I20

PLASTIC INVENTOR CYNTHIAW WISTER PLASTI;

ATTORNEY United States Patent DEVICE FOR BLOWING BUBBLES Cynthia W. Wister, Philadelphia, Pa.

Application January 4, 1954, Serial No. 401,747 2 Claims. (Cl. 46-7) This invention relates to a toy and more particularly to a device for blowing bubbles from a water solution containing a surface tension agent.

It is an object of this invention to provide a bubble forming device of a non-breakable nature.

It is a further object of this invention to so form this device that its contents may not easily be spilled.

Other objects and advantages of this invention will appear hereinafter.

One embodiment, which will serve as an illustration of this invention is shown in the drawings wherein:

Fig. 1 is a horizontal view of the device;

Fig. 2 is a profile view, partially in section.

Fig. 3 is a plan view of the second modification of this invention.

Fig. 4 is a profile view, partially in section of this modification.

Referring more particularly to the drawings, the receptacle 10, preferably made of plastic or other nonbreakable materials may be either round as shown in Figs. 1 and 2, or may be flattened with or without accordion pleats. The top of this receptacle is closed by means of the cap 11, shown in section in Fig. 2. This closure member has appropriate openings to receive the necessary tube projecting into the receptacle.

An air tube 12 leading from the mouth piece 13 to the nozzle 14 conducts air to said nozzle for the put pose of forming a bubble. A second tube 15 leads from the mouth piece 13 into the receptacle through the cap 11 and extends near the bottom thereof. A tube 16 extends from a space near the top of the receptacle to the nozzle 14, the nozzle 14 having two tubes entew ing therein and being flanged downwardly so as to produce a bubble forming cup. The mouth piece 13 is made of collapsible resilient material that is normally maintained in a closed position but may be compressed by the user to admit air therein. This produces normal; a seal to prevent the contents from being accidentally spilled.

In order to operate this device a liquid is placed in the receptacle 10 partially filling the same. The mouth piece 13 is then compressed so as to allow air to b: blown therein. This air is conducted in two streams, the first through tube 12 directly to the bubble forming cup 14, the second stream through tube into the receptacle below the liquid surface thereof and it bubbles up through said liquid and carries vapor suspended therein through exit tube 16 to the nozzle. This allows the formation of bubbles which break from the cup 14 and float suspended in the air. The liquid having the necessary surface tension is conducted through the receptacle 10 to this nozzle by means of the air passage 16.

It is apparent from the above description that air flows from the mouth piece to the nozzle 14 in two streams. These streams may be conducted in a common conduit 17, shown in Figs. 3 and 4 with a side tube 18 leading from this common conduit to the bottom of the container 10 and a vent 19 from the top of the container into the conduit. A restriction 20 between the side tube and the vent will facilitate forcing air through the receptacle. This second embodiment of the invention is simpler to construct and therefore cheaper to manufacture.

The general principle illustrated in the above example is having a conduit from the mouth piece 15 to the bubble forming cup 14 so restricted that it will force a portion of the air to flow into the receptacle 10 and bubble therethrough. The air bubbling through the receptacle 10 will carry with it a quantity of the bubble forming liquid contained within the receptacle. This liquid is a water solution containing a surface active agent that will promote the formation of bubbles in the cup 14.

The advantages of this device are apparent to one skilled in the art. Heretofore devices of this type have been made with a frangible receptacle and the liquid contents thereof are frequently spilled accidentally through the tube. Children using the old device frequently break the glass receptacle, cutting themselves and spilling the contents of the receptacle.

The present device being made of plastic is not subject to accidental breakage. The collapsible nozzle 14 forms a partial seal and prevents spilling of the contents.

It will be understood that the invention may be variously modified and embodied within the scope of the subjoined claims.

What is claimed is:

1. A bubble forming device comprising a closed receptacle and a tube leading from a mouth piece into the receptacle near the bottom thereof, an exit tube from the top of the receptacle to a nozzle and a continuous air passage wholly exterior of the receptacle from the mouth piece to the nozzle.

2. A bubble forming device comprising a continuous tube with a mouth piece at one end thereof, a nozzle at the other end thereof, a side tube near the mouth piece end projecting into a closed receptacle below and separate from the continuous tube, said side tube extending near the bottom thereof and a vent from the top of the receptacle into the first mentioned tube near the nozzle end thereof.

References Cited in the file of this patent UNITED STATES PATENTS 807,201 Paulson Dec. 12, 1905 2,430,999 Skinner Nov. 18, 1947 2,587,895 Quinn et a1. Mar. 4, 1952 

